Removing CephFS from a Ceph Cluster (Luminous)

13 MAR 2018
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1 min read

While upgrading the packages for the Ceph cluster at SANBI, I encountered an issue where the Ceph MDS daemon was causing the CephFS filesystem to become unresponsive and stuck in the active(laggy) state. I decided to strip down the CephFS deployment and reinstall it, since the existing one was for testing (set up before my time) and I wanted to do the process of setting it up from scratch.

It was surprisingly difficult to find a simple process for removing an MDS, but after I did some digging I ended up using the following: